1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d88113d809c556b29b451a8ecbc51461e182f52f32b33efc0548cafb4dbd85e. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f77aa14c-cefa-4876-97f2-9263ef4c194f.json and https://artists.proofprofile.net/proofs/artist/f77aa14c-cefa-4876-97f2-9263ef4c194f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1016c2e60686f5c63c743a303c488933e33122b5ebc512312c80b34da4f1beca. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPZ921506316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0ab3b779802e4d7e802e5cfed4c016b057512ac53fdad5881b48a4caa95378f. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPZ921711256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cb4b5328784a4da7f549689fbadd6933d0375ce3be10fc03e5bac34bee2c506. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPZ921711259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2bc05e2c23904f55e76dbd842dd75d7ed8f787ccab0e7b3abcd52d6ccea29ce. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPZ921806233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92629705d6c139a4fe8dbc0da23cd61b7f68e3f62212d7c8a671f3db5e5c2ab6. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPZ921806239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2c24ea4634e3ec507335c575cda61617b90b3fe297bce758dc4dbf5a9506037. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:00:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPZ921903488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b7c1ac71f316ab6b7cf8ed9285dc4f6e23b857825d4d902f197e30cbda95cd2. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T07:21:40Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPZ921903491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28f850f8a99765d4c70658a7f1b3e8546e99f0289affed50fa069272ad6a141b. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:08:55Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPZ922107252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5206698a5acc558b7c0d821edc1928c91ec6f267050261394fe32ea383d32150. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPZ922107251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51bddafc7d5033bf8678625a51fddb3434317b70cd8b3d8295f1f9dd463ffc0d. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPZ922013653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f7dc74465b040207739ac62823031ebdc3c61cf3bbae6bd74991e6d2a5ab3b0. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPZ921903487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc372208c178b3f0de93a01c37f0f87760ab8c5b0f4749358b23e73d21187ab2c. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:51:31Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JP92N2238130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5811cc4f4b68981b12b7b53a5465d724b498cdd9c9953fd5b92384c873c7d3d. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPZ922210554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3ba0654642efc2805ec734c246b4eac28d59f4a180b70db12fdd18bbe39ba26. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JP92N2359626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aa6f7c436e2c2eaaa17de6b99458e9b8c9a1b15cd6a5516fd390e34f8325b1b. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:05:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JP92N2371089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2756d0dfdc2f159cf4d0f4749973168073a8ef71c5346c9763dd3d844a95e80a. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JP92N2445413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ac50da37a049b7918b5250eabbbe201b2e31eb1c6a4151a72f386e818450291. Chain 2 (Bitcoin): anchored in block 956430 (2026-07-03T02:22:42Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JP92N2445414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1532ebc197b248b0c911c0e1dc046ddfc0a116786ae095722520e825de861a60. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JP92N2445415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x340f7f738d20709a48ddcc615f96854fa8a82b24595b03464c144e4dd1ab31a6. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:01:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JP92N2445416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x510bb3e2fddff53f201aa450b895eb457c4543d17ea0a8fb92a98201fd3c1abf. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JP92N2445417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d38697e3418ce5a875573e9a38ec35fb40b2686eaa3714b8c8a4f5ea43a97ad. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:10:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JP92N2445421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf7d78296515f7e5a06c6ae2026d8614d961bc4349ee8906dc63b43f624d6da7. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JP92N2445422.